Insulated Concrete Slab Foundation

4 10 2012 3 climate zones e301 1 6 5 8 4 slab r value table 402 1 1 insulation and fenestration requirements by component e402 1 1 climatezone slab r valued 4 10 2 ft 5 10 2 ft 6 10 4 ft 9.

Insulated concrete slab foundation. Martin holladay explains insulating a slab on grade in the energy smart details department. Two materials used to construct foundations are icf and poured concrete. The slab is created from a mold built into the ground that s reinforced with rebar and wire mesh. Slab foundation is the least expensive of the three foundations.

Do so all the way around the perimeter of the foundation. The f factors for slab on grade floors are defined in standard 90 1. Concrete slab on grade. The climate the type of foundation whether the slab includes hydronic tubing for radiant heat and the severity of the local termite problem.

If you re pouring up against your foundation walls insulate between the slab and the walls. You can either use a raft foundation which is a reinforced concrete slab and foundation cast in one or opt for a perimeter reinforced concrete ring beam arrangement to support the load bearing walls with a separate reinforced concrete slab for the floor. For a cleaner looking installation cut the top edge of the foam board at a 45 degree angle so the concrete will flow all the way to the foundation wall and hide the foam. Insulating a slab on grade depends on at least four factors.

But to make the most of the thermal mass benefits of concrete the slab and foundation should be insulated from both the ground and the air. A concrete floor is an excellent solution for a high performing home. Insulated concrete forms foundations. How you insulate under the slab depends upon the severity of your winters.

From an engineering perspective there are two choices. Check out the podcast episode and please feel free to leave you comments or questions. Continuous insulation extends downward from the top of the slab and along the entire perimeter and completely covers the entire area under the slab. Best seller owens corning foamular 250 2 in.

Frost protected slab poured over polystyrene insulation with additional polystyrene insulation outside the foundation wall. A basement foundation supports the entire structure. Slab on grade refers to a concrete slab that s used as a foundation for a structure. Install rigid insulation foam board against the foundation from the subfloor to the plastic or concrete slab on the floor of the crawlspace.